title: A comparative study on the uptake of polycyclic aromatic hydrocarbons by Anodonta californiensis.
abstract: Uptake of polycyclic aromatic hydrocarbons (PAHs) by the freshwater bivalve mollusc Anodonta californiensis was examined in the presence and absence of surfactant in order to gain further insight into mixture toxicity and to predict whether certain mixtures have negative and/or positive effects on aquatic organisms. In the presence of surfactant, the uptake of anthracene or chrysene was higher than that of naphthalene, given the same concentration in the solution. In the absence of surfactant, the trend was similar, but the uptakes were increased by approximately 100% compared to those in the presence of surfactant. On the uptake of naphthalene, the presence of anthracene showed only minor influence. The uptake of anthracene was affected by both naphthalene and chrysene. The uptake of chrysene was influenced by neither naphthalene nor anthracene. There was no observable displacement of divalent cations from the surface of the gill membrane by any of the PAHs studied.
authors.affiliation: Department of Natural Sciences, University of Maryland Eastern Shore, Princess Ann, MD 21853, USA.
authors.forename: Marcos A
authors.initials: MA
authors.lastname: Cheney
authors.forename: Jing
authors.initials: J
authors.lastname: Liu
authors.forename: Amei
authors.initials: A
authors.lastname: Amei
authors.forename: Xuxin
authors.initials: X
authors.lastname: Zhao
authors.forename: Sang W
authors.initials: SW
authors.lastname: Joo
authors.forename: Shizhi
authors.initials: S
authors.lastname: Qian
mesh_terms: D000818:Animals; D049877:Anodonta / Q000187:drug effects / Q000378:metabolism*; D000873:Anthracenes / Q000493:pharmacokinetics / Q000494:pharmacology; D002911:Chrysenes / Q000493:pharmacokinetics / Q000494:pharmacology; D005880:Gills / Q000187:drug effects / Q000502:physiology; D009281:Naphthalenes / Q000493:pharmacokinetics / Q000494:pharmacology; D011084:Polycyclic Aromatic Hydrocarbons / Q000493:pharmacokinetics* / Q000494:pharmacology; D013501:Surface-Active Agents / Q000494:pharmacology; D014874:Water Pollutants, Chemical / Q000493:pharmacokinetics* / Q000494:pharmacology
chemical_list: D000873:Anthracenes; D002911:Chrysenes; D009281:Naphthalenes; D011084:Polycyclic Aromatic Hydrocarbons; D013501:Surface-Active Agents; D014874:Water Pollutants, Chemical; C031180:chrysene; C007229:decalin; C034020:anthracene